chore(package): update coveralls to version 2.13.0
chore(package): update coveralls to version 2.13.0

https://greenkeeper.io/
Jenselme/ngeo,adube/ngeo,adube/ngeo,adube/ngeo,camptocamp/ngeo,adube/ngeo,camptocamp/ngeo,camptocamp/ngeo,Jenselme/ngeo,camptocamp/ngeo,Jenselme/ngeo,camptocamp/ngeo,Jenselme/ngeo